Coupling pin retaining device



19, i935.. G, H HODGES u COUPLING PIN RETAINING DEVICE Filed Dec, 29, 1953 2 Sheets-Sheet l GEO/S65v H. Hopa-E5, y M /f ifa/*nega March 19, 1935. G. H. HODGES COUPLING PIN RETAINNG 'DEVICE 2 Sheets-Sheet 2 Filed neo. 29, 1935 atentecl Mar. 19, 1935 ooUPLiNG ein RETAINING DEVICE George H. Hodges, Scottdale, Pa. vapplieinem December 29, 193s, serial No. 'muses 2 Claims.

This invention relates to coupling pin retaining devices.

One object of the present invention is the provision of a novel coupling pin retaining device,

such as may be used for the retention of coupling pins when the cars on which they are used are tilted, or rotated, for the purpose of dumping their contents.

Another object is to provide a novel device of the class described' which may be easily and cheaply manufactured, and used on existing types of coupling equipment.

Still another object is to provide a novel coupling pin retaining device which will have but one moving part, which is characterized by the fact that it will not be clogged by dirt and other accumulations, and will accordingly function under all conditions.

These and further objects will be apparent after referring tc the drawings, in which:

Figure 1 is a sectional side elevation of a drawbar employing the device of the invention.

Figure 2 is a plan showing the device of Figure 1 partly in section.

Figure 3 is a sectional end elevation.

Figure 4 is a sectional end elevation of the device of Figure 3 in a tilted position,'and showing the novel function thereof. Y

Figure 5 is a sectional side elevation of a clevis hitching employing the device of the invention.

Figure 6 is a plan, partly in section, of the device of Figure 5.

Figure 7 is a sectional end elevation.

Figure 8 is a sectional end elevation of a drawhead employing the device of the invention.

Figure 9 is a sectional view on the line IX-IX of Figure 8.

Figure 10 is a plan of the device of Figure 8.

Referring more particularly to the drawings, the numeral 2 designates a conventional type of draw-bar having apertures 3 extending through both of its sides.

According to the teaching of the present invention, a cap 4 is welded to the top of the drawebar 2, as at 5, and provided with an aperture 6 in alinement with the apertures 3 of the draw-bar. A ring 7 of considerable Weight is disposed within the cap 4 and adapted to conform substantially to the outer diameter of a conventional coupling pin 9, having the usual head 10, and a ring 12 attached to the head for the purposes of assisting insertion land withdrawal.

The upper portion of the shank of the pin 9 is annularly grooved, as at 14.

In operation, the pin 9 is inserted through the aperture 6 of the cap 4, through the apertures 3 of the `draw-bar 2, and must, of course, pass through the ring 7. As the car carrying the drawbar 2 is tilted, or rotated, for the purpose of dumping its contents, the ring 7 will slide within the cap 4 in such manner as to seat in the annular Vgroove 14 of the pin, and prevent the pin from dropping from the coupling.

Referring to Figures 5, 6 and 7, a modied form of coupling is disclosed as comprising a clevis hitching 16, having the usual apertures 17.

In Figures 8, 9 and 10, a drawhead 18, having the usual thickened portions 19, through which the apertures 20 extend, is shown as employing the device ofthe invention, which is modified slightly by extending the legs of the cap 4 as shown at 4a.

It will thus be seen that the device of the invention may be readily applied to any type of existing car coupling design, with the advantages pre viously mentioned.

I claim:

' as defined in the following claims.

, 1. A car coupling comprising, in combination, an annularly grooved pin, a coupling member carried by the car, said member having at least one aperture for receiving said pin, a cap welded to said coupling member, said cap having an aperture in alinement with the receiving aperture in said coupling member, and a .ring in said cap for seating in the groove of said pin when the car is tilted,` said ring conforming substantially to the diameter of said pin.

2. A car coupling comprising, in combination, an annularly grooved pin having a head, a coupling member carried by the car, said member having at least one aperture for receiving said pin, a cap secured to said coupling member, said cap having an aperture in alinement with the pin receiving aperture in said coupling member, and a ring in said cap for seating in the groove of said pin when' the car is tilted, said ring conforming substantially to the diameter of said pin, the head of said pin being adapted to seat on the top of said cap.

GEORGE H. HODGES. 

